What is a Distributed System

A distributed system is a collection of independent or autonomous computers linked by a computer network that appear to the users of the system as a single computer.

Two aspects
(1) Independent or autonomous computers and
(2) Single system _ middleware.
  • System architecture: the machines are autonomous; this means they are computers which, in principle, could work independently(Personal OS, CPU, M/Metc.) .
  •  The user’s perception: the distributed system is perceived as a single system solving a certain problem (even though, in reality, we have several computers placed in different locations).

According to this definition, the Internet as such, is not a distributed system, but an
infrastructure on which to implement distributed applications/services (such as the
World Wide Web).

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